There have been some political insinuations in this thread, and I would like to address them.
If this was politically motivated, then the PERSON, not the POLITICAL affiliation should be blamed. There are nuts on both sides of the aisle. Being a Ron Paul supporter in 2008, I know this first hand. I saw nutters, KKK'ers, Neo Nazis, and others, at Ron Paul rallies, despite the fact that Ron Paul himself harshly condemned them. Democrats also have their share of nutters. I remember election day in 2001, when President Bush's car was pelted with eggs, and I also remember some protests, while Bush was in office, that turned very violent.
If this turns out to be the handiwork of a political nutter, then the last thing we should do is argue about his motivations. We would only be empowering other nutters by discussing the political aspect of this act. It would be much better to execute the scum bag, and forget about him.
So, what I am saying is that, if this is a political nutter, then let's discuss this, not from angle of "he is a so and so <insert political lean here>", but from the angle that he is a criminal who needs to have justice meted out to him. For that is what he is, no matter what political affiliation he is. This is America, and he most certainly is not American, but a man who betrayed our founding fathers. At this time, let us all, Democrat and Republican alike, come together and mourn a tragedy, and also pray for the family of Gabrielle Giffords. As for the shooter, fhugettabotit.